After conditioning my Congo African Grey to wear the collar, this took a week, she wore it for 8 days and then she stopped picking once the collar was removed. I used the collar for chest and body plucking. I have also increased our training time and put her to bed earlier. My veterinarian recommended drugs to stop this destructive behavior but I felt that I needed to address it in a more organic way and I’m thrilled that I did. I’m so happy to see my birds feathers coming back in! Thank you!